VDB-340026 · CVE-2026-21427 · GCVE-0-2026-21427

Pioneer Stelllanova APS-S301 uncontrolled search path

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Pioneer USB DAC Amplifier APS-DA101JS, USB DAC Amplifier APS-DA101JR, USB DAC Amplifier APS-DA101JGL, USB DAC Amplifier APS-DA101JGR, Stellanova Lite APS-S201JS, Stellanova Lite APS-S201JR, Stellanova Lite APS-S201JGL, Stellanova Lite APS-S201JGR, Stelllanova Limited APS-S202J-LM and Stelllanova APS-S301. Impacted is an unknown function. The manipulation results in uncontrolled search path. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is identified as CVE-2026-21427. The attack is only possible with local access. There is not any exploit available.

Detailsinfo

A vulnerability was found in Pioneer USB DAC Amplifier APS-DA101JS, USB DAC Amplifier APS-DA101JR, USB DAC Amplifier APS-DA101JGL, USB DAC Amplifier APS-DA101JGR, Stellanova Lite APS-S201JS, Stellanova Lite APS-S201JR, Stellanova Lite APS-S201JGL, Stellanova Lite APS-S201JGR, Stelllanova Limited APS-S202J-LM and Stelllanova APS-S301. It has been classified as critical. Affected is an unknown functionality. The manipulation with an unknown input leads to a uncontrolled search path vulnerability. CWE is classifying the issue as CWE-427. The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The installers for multiple products provided by PIONEER CORPORATION contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries. As a result, arbitrary code may be executed with the privileges of the running installer.

The advisory is available at jpn.pioneer. This vulnerability is traded as CVE-2026-21427 since 12/25/2025. The exploitability is told to be difficult. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/08/2026). This vulnerability is assigned to T1574 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Pioneer

Name

Support

end of life

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.0
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (jpcert): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uncontrolled search path
CWE: CWE-427 / CWE-426
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/25/2025 CVE reserved
01/08/2026 +14 days Advisory disclosed
01/08/2026 +0 days VulDB entry created
01/08/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: jpn.pioneer
Status: Confirmed

CVE: CVE-2026-21427 (🔒)
GCVE (CVE): GCVE-0-2026-21427
GCVE (VulDB): GCVE-100-340026

Entryinfo

Created: 01/08/2026 08:12
Changes: 01/08/2026 08:12 (73)
Complete: 🔍
Cache ID: 216::103